Download Quiz 2_Fulltime

BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
Name:_______________________________ Mode of Study:________
Student Number:______________________
Qualification:_________________________
Instruction: Answer all the questions on the questions paper.
SECTION A: BIOLOGY
QUESTION 1 [20 MARKS]
Question Type: Multiple Choices. Each answer equals 2 marks.
1.1 The three macronutrients are _____________.
A.
B.
C.
D.
monosaccharide, polysaccharide, disaccharide
fibre, vitamins, proteins
carbohydrates, lipids, glycerol
lipids, carbohydrates, proteins
1.2 What elements make up a carbohydrate?
A.
B.
C.
D.
[2]
[2]
hydrogen, calcium, oxygen
hydrogen, oxygen, carbon
carbon, potassium, oxygen
calcium, potassium, oxygen
1.3 A substance needed by the body for growth, energy, repair and maintenance is
called a _______________.
[2]
A.
B.
C.
D.
nutrient
carbohydrate
calorie
lipid
1.4 Which of the following is an organic molecule?
A.
B.
C.
D.
[2]
water
ice
nitrogen
carbohydrates
1.5 Nuts, avocados, sesame seeds and olive oil are highest in which type of fat? [2]
A.
B.
C.
D.
Monounsaturated
Saturated
Polyunsaturated
None of above
Page 1 of 1
BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
1.6 'Table sugar' is which type of sugar?
A.
B.
C.
D.
[2]
Fructose
Galactose
Glucose
Sucrose
1.7 A diet lacking Vitamin D and calcium can be linked to which of the following? [2]
A.
B.
C.
D.
kidney failure
scurvy
osteoporosis
cardiovascular disease
1.8 An amylase is an enzyme in saliva that breaks down carbohydrates into _______.
[2]
A. fatty acids
B. sugars
C. amino acids
D. polypeptides
1.9 Fibre cannot actually be digested; however, it is an important part of our diet for
various reasons. One of the following reasons is false, identify which.
[2]
A. As it remains undigested it passes through the entire gut from mouth to anus
and thus keeps food moving smoothly through our system.
B. It prevents constipation.
C. The fibre absorbs poisonous waste from the digested food.
D. High fibre diets are believed to increase the risk of heart disease, bowel cancer
and cholesterol in the body.
1.10 Which of these food types is the main dietary cause of high cholesterol in the
blood?
[2]
A.
B.
C.
D.
Cholesterol
Saturated fat
Monounsaturated fat
All of the above
SECTION B: CHEMISTRY
QUESTION 1 [14 MARKS]
Question Type: Multiple Choices. Each answer equals 2 marks.
1.1 Carbon dioxide is an example of a sample of matter classified as a/n;
A. compound
B. homogeneous mixture
C. heterogeneous mixture
D. element
Page 2 of 2
[2]
BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
1.2 A process which involves the input of energy or absorption of heat is called;
[2]
A. exothermic
B. dissolving
C. endothermic
D. thermodynamic
1.3 Sublimation is the transformation of a;
[2]
A. gas into a solid
B. solid into gas
C. gas into liquid
D. liquid into gas
1.4 An appropriate physical method that can be used to separate an insoluble solid
from a liquid is;
[2]
A. Chromatography
B. separating funnel
C. fractional distillation
D. filtration
1.5 Which of the following is a characteristic of a mixture;
[2]
A. no define composition
B. consists of two or more substances
C. retains original properties
D. All of the above
1.6 How does the presence of an impurity affect the freezing point and boiling point
of water?
[2]
A. raises the freezing point and lowers the boiling point
B. lowers the freezing point and lowers the boiling point
C. lowers the freezing point and raises the boiling point
D. raises the freezing point and raises the boiling point
1.7 Which of the following samples of matter is NOT classified as a compound?
A. blood
B. water
C. salt
D. glucose
Page 3 of 3
[2]
BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
SECTION C: PHYSICS
QUESTION 1 [20 MARKS]
1.1
Which one is a renewable source of energy?
A. nuclear energy
B. geothermal gas
C. natural gas
D. coal
1.2
The correct order for generation of electricity from nuclear energy
is_________.
(2)
(2)
A. supply electricity > heat water to make steam > steam turns turbines >
electrical power sent around the country
B. Fusion of uranium > heat water to make steam > steam turns turbines >
electrical power sent around the country
C. Fission of uranium > heat water to make steam > steam turns turbines >
electrical power sent around the country
D. Crushing of uranium Fission of uranium heat water to make steam > steam
turns turbines > electrical power sent around the country
1.3
Which of the following is not true about biofuel.
(2)
A. It is obtained from remains of plant and animal materials.
B. It can also be generated from methane gas
C. It is a nonrenewable source of source of energy
D. It is expensive to produce.
1.4
Peter uses energy of 600 J to carry a suitcase upstairs, a distance of 4 m.
Assuming the acceleration due to gravity is 10 m/s/s, what is the mass of the
suitcase is;
(2)
A. 1500 g
B. 15000 kg
C. 15 000 g
D. 150000 kg
1.5
A 2500 gram Ball is thrown into the air with an initial velocity of 30 cm/sec.
Which statement is true about the ball have when it reaches the top of its
ascent?
(2)
A. Kinetic energy is at its highest
B. The kinetic energy is equal to gravitational energy.
C.The ball does not have energy at this position.
D. The acceleration due to gravity is equal to 9.8 m/s/s
1.6
During the ascent phase of a rep of the bench press, the lifter exerts an
average vertical force of 100 N against a barbell while the barbell moves
0.8 m upward. How much work did the lifter do to the barbell?
Page 4 of 4
(2)
BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
A. 0.8 J
B. 800J
C. 8000J
D. 80 J
1.7
This graph shows a ball rolling from A to G. The ball starts at point A and rolls
to point G.
Which letter shows when the ball has the least potential energy?
(2)
A. A and G
B. D only
C. C and E
D. B and F
1.8
A cart at the top of a 0.3 Km hill has a mass of 500 g? Assuming acceleration
due to gravity to be 10m s/s.
Page 5 of 5
BSC410S – BASIC SCIENCE: FULLTIME QUIZ 2 QUESTION PAPER – 18 SEPTEMBER 2015
What is the cart’s gravitational potential energy?
A.
B.
C.
D.
1.9
(2)
150 J
1500 J
15000 J
15000 Nm2
(Use information from question 1.8) Assuming that energy is conserved and
there is no friction, what is the speed at the bottom of the hill.
(2)
A. 137 m/s
B. 173 m/s
C. 173 m/s/s
D. 173 m
1.10
Law of Conservation of Energy states that;
(2)
A. Energy can be created or destroyed; it may be transformed from one
form into another, but the total amount of energy never changes.
B. Energy cannot be created or destroyed; it may be transformed from one
form into another, but the total amount of energy never changes.
C. A. Energy cannot be created or destroyed; it may be transformed from one
form into another, but the total amount of energy changes.
D. Energy can be created or destroyed; it may be transformed from one
form into another, but the total amount of energy changes.
TOTAL MARKS: 54
THE END
Page 6 of 6